<!-- !英文叹号
html
-->
<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="author" content="wangbo">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    div {
      margin: 200px auto; 
      width: 200px;
      height: 200px;
      background-color: aqua;
      transition: all 5s;
    }
    div:hover {
      transform:skewX(30deg)
      /* transform:skewY(30deg); */
     
    }
  </style>
</head>

<body>
  <div>

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</body>

</html>